Keratoacanthoma. Light micrograph of a section through a keratoacanthoma nodule. The dark spots are the nucleus of cells,with the double-lobed ones being white blood cells responding to inflammation. The cause of a keratoacanthoma lesion is unknown but it has many features of a viral condition,and consists of a localised proliferation of squamous cells that forms a cratered nodule. The nodule grows over several weeks before gradually disappearing. However,the unsightly nodule is often surgically removed. The cause of keratoacanthoma is unknown,although exposure to sunlight appears to be a factor | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Biophoto Associates |
Bildgröße: | 5197 px × 3444 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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